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Direct linkPae, Tae-Il; Park, Gi-Pyo – Language Testing, 2006
The present study utilized both the IRT-LR (item response theory likelihood ratio) and a series of CFA (confirmatory factor analysis) multi-sample analyses to systematically examine the relationships between DIF (differential item functioning) and DTF (differential test functioning) with a random sample of 15 000 Korean examinees. Specifically,…
Descriptors: Item Response Theory, Factor Analysis, Test Bias, Test Validity
